Check-valve



(No Model) 7 H. A. HALL.

CHECK VALVE. No. 283,777. Patented Aug; 28, 1883.

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/ HOWARD A. HALL, OF STURGIS, MICHIGAN.

CH ECK-VALVE.

SPECIFICATION forming part of Letters Patent No. 283,777, dated August 28, 1883.

Application filed February I. 1883. (N0 model.) i

To all whom it may concern:

Be it known that I, HOWARD ApHAnL, a citizen of the United States, residing at Sturgis, county of St. Joseph, and State of Michigan, have invented a new and useful Check- Valve, of which the accompanying is a specification.

My invention relates to checlevalves which are used in drive-wells; and the object of my invention is to furnish for drive-wells a checkvalve without packing. I attain this object by the mechanism illustrated in the following drawing, in which the figure is a vertical section of the entire check-valve in position in the well screwed to the pipe-coupler.

E is the check-valve, which is seated on the circular metallic block A, having through the center channel B. The Valve-rod O is guided. by the grate D. The flange F of the block A is furnished with a screw-thread fitting into a having the internal annular threaded flange,

G, substantially as described.

HOWARD A. HALL.

IVitnesses;

WM. M. LoUeHLIN, CHARLES B. GURNEY. 

